directive-elifdef.mk revision 1.4
1 # $NetBSD: directive-elifdef.mk,v 1.4 2022/02/09 21:09:24 rillig Exp $ 2 # 3 # Tests for the .elifdef directive, which is seldom used. Instead of writing 4 # '.elifdef VAR', the usual form is the more general '.elif defined(VAR)'. 5 6 # At this point, VAR is not defined, so the condition evaluates to false. 7 .if 0 8 .elifdef VAR 9 . error 10 .endif 11 12 VAR= # defined 13 14 # At this point, VAR is defined, so the condition evaluates to true. 15 .if 0 16 .elifdef VAR 17 .else 18 . error 19 .endif 20 21 all: 22
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